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(No Model.) 2 Sheets-Sheet 1.

F. J. MITCHELL. AIR POROING DEVICE FOR ATOMIZERS.

No. 585,220. Patented June 29, 1897.

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BY ATTORN- 5 n4: mums mzns co, PHOTO-LIYNO. WASHINGTON a c (No Model.) 2 Sheets-Sheet 2.

P. J. MITCHELL. AIR FORGING DEVICE FOR ATOMIZERS.

No. 585,220. Patented June 29,1897.

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UNITED STATES PATENT @rricn.

FREDERICK JAMES MITCHELL, OF NEW YORK, N. Y.

AIR -FORCING DEVICE FOR ATOMIZERS.

SPECIFICATION forming part of Letters Patent No. 585,220, dated June 29, 1897.

Application filed December 10, 1895. $erial No. 571,629. (No model.)

- New York, have invented certain new and useful Improvements in Apparatus for Forcing Air, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming'part of this specification.

My invention relates to apparatus for operating a pneumatic devicesuch, for instance, as an atomizer-by the movement of a door or some equivalent device; and the object thereof is to provide a simple, reliable, and substantially noiseless apparatus of practically universal applicability.

To this end the invention consists in the arrangement and combination of parts hereinafter described, and specifically pointed out in the claim.

In the drawings, Figure l is a view in elevation showing my improved apparatus connected with an atomizer. Fig. 2 is a plan View 'piston-rod b. The cylinder and piston are pivotally attached to a suitable support,which may be either the door-jamb X, as shown in Figs. 1 and 2, or the door Y, as shown in Fig.

, 3, by the pivot c, which passes through the piston-rod and through the lugs c of the plate C, the latter being secured or otherwise affixed to the said support. A vent 1) communicates with the air-passage b which runs longitudinally through the piston-rod from the vent b to the inner end of the rod behind the piston. A tube D connects the vent Z) with the pneumatic device E,which, as shown, is an atomizer of ordinary construction arranged to discharge a liquid or powdered substance when a current of air is forced through the tube D. This atomizer or equivalent device E may, as will be perceived, be situated at a considerable distance from the point at which the cylinder and its operating mechanism are located. To the said support is also secured a plate F, in which is fixed the depending pin f, which serves as a pivot for the lever Gr, which at its opposite end is pivotally connected with the end of the cylinder A by the pin g, which passes through the thimbles b secured to the cylinder-head. The coilspring H is carried by the pin f, one end of the spring being firmly secured to the pin and the other end thereof passing under and behind the lever Gr, so that the spring will tend to carry the lever away from the support, as shown in full lines in Figs. 2 and 3. The movement of the lever G may be limited in that direction by the stop I) on the piston-rod b, Fig. 2. A pin 1 is securely fixed to and is carried by the other member of the support,which may be either the door, as shown in Figs. 1 and 2, or the door-jamb, as shown in Fig. 3, and a roller 6 is preferably mounted on said pin in such a position that it will engage with the lever G when the door is closed and in such a manner that it will rotate freely on its axis. This roller is preferably made of wood or some non-metallic substance to render its action as noiseless as possible.

Referring to Figs. 1 and 2, the operation of my invention is as follows: When the door is shut, as shown in Fig. 1, the roller 2' will be in contact with the lever G and will hold the cylinder A and the lever G toward the door-jamb, as shown in dotted lines, Fig. 2. lVhen the door is opened, the roller 2' will be carried with it and the spring 11 will swing the lever G on its pivot, carrying the lever and the cylinder A into the position shown in the full lines, Fig. 2. The piston 13 will thus be carried toward the forward end of the cylinder and the space behind the piston will fill with air, which is drawn through the tube D and the passage 19 in the piston-rod. As the door Y is opened beyond the position shown in Fig. 2 the roller 2' will be carried away from the lever G, but the lever and cylinder will be held in the position shown by the engagement of the stop b Fig. 2, or the piston, Fig. 3, with the cylinder-head. lVhen the door is closed, the roller 2' will be brought into engagement with the lever G again and will carry the lever and cylinder into the position shown in dotted lines, Fig. 2, forcing the piston toward the bottom of the cylinder ICO and forcibly expellin g the air contained therein through the passage 71 and pipe D across the discharge-tube of the atomizer E, thus spraying into the room or apartment where the atomizer is located a quantity of the liqu id or other substance therein contained.

In the modified arrangement shown in Fig. I; the cylinder and its connected parts are supported on the door instead of on the doorjamb and the operating-pin I is mounted on the door-jamb. When the door is opened, the resulting disengagement of the lever G and roller i permits the spring F to carry the cylinder into an angular position with the door to charge the cylinder, as before described, and the engagement of the roller i with the lever G forces the cylinder into the position shown in dotted lines, thereby discharging the cylinder to operate the atomizer. If desired, a short section of rubber tubing may be substituted for the roller 1'.

It will be observed that this invention is peculiarly adapted for use in automatic disinfecting systcms such as are now in general use in the large cities, as any desired quantity of the disinfectant or deodorant used in the system may be discharged into any room or apartment by the closing of a dooror other similar object.

I do not wish it understood that I claim, broadly, herein the combination of an atomizer and air-forcing cylinder adapted to be operated by the movement of a door, since such a device is shown in my previous United States Letters Patent, No. 371,615, dated October 11, 1887, and No. 135,013, dated August 26, 1890; but my improved apparatus possesses very decided advantages over these former devices, because the cylinder can be placed either on the door or on the door-jamb, and it may be located at any point or in any position either inside or outside the door and either on the side or on the top of the door, as desired, while in the previous structures the cylinder could be placed on one side only of the door, at its top and within a few inches of its hinges. They would not operate it placed in any other position, and this precluded their use in places where the door did not extend to the top of the casing, a construction very common in closets and bathrooms.

Anotheradvan tagc is that the device herein shown and described is practically noiseless in operation, which is a practical consideration of great importance.

Another advantage of the present apparatus overthat shown in my said Patent No.135,013 is that it is operated by closing instead of the opening of the door.

Having thus shown and described my invention, what I claim as new, and desire to secure by Letters Patent, is-

I11 air-forcing devices for operating atomizers and the like, the combination with suitable supports such as a door and its jamb, of the cylinder A provided with the piston B, an arm G pivotally connected with said cylinder, said cylinder and arm being secured to one of said supports, a spring arranged to normally hold said cylinder and arm away from and at an angle to their support, and aprojection secured to the other support so as to engage with the arm G, when the door or equivalent support is closed, and cause the expulsion of the air in said cylinder, substantially as shown and described. 

